Astronomy and Astrophysics – Astronomy
Scientific paper
Nov 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010apj...724..182c&link_type=abstract
The Astrophysical Journal, Volume 724, Issue 1, pp. 182-188 (2010).
Astronomy and Astrophysics
Astronomy
1
Galaxies: Luminosity Function, Mass Function, Galaxy: Fundamental Parameters, Galaxy: General, Galaxy: Stellar Content, Galaxy: Structure, Infrared: Stars
Scientific paper
The logarithmic differential star count of the Two Micron All Sky Survey in Ks band can be well approximated by a single power-law luminosity function. With a fiducial Galactic structure, we measure the luminosity function for the entire Milky Way. The distribution of the power-law index is roughly isotropic and shows no obvious trend with the Galactic latitude. The value for the power-law index, the bright and the faint ends of the luminosity function are 1.85 ± 0.035, Ks = -7.86 ± 0.60 mag, and Ks = 6.88 ± 0.66 mag, respectively. Our result strongly supports the notion of a universal luminosity function in our Galaxy. We also find that the luminosity function of LMC/SMC is similar to that of the Milky Way.
Chang Chan-Kao
Ko Chung-Ming
Peng Ting-Hung
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